Could you please describe your application: 8Zj=:; 1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... U0%T<6*H 2, is the fiber single mode or multimode? what is the NA, core dia,... AcZ{B< kJQH{n+)R Generally, fiber coupling efficiency of 40%~90% is reasonable. #&V7CYJ mf~JolucJ Again let us know your specific bug. \a<7DTV [&_7w\m MANG2004 zKh^BwhO|X